科技报告详细信息
L-H Threshold Studies in NSTX | |
Kaye, S M ; Battaglia, D ; Bell, R E ; Chang, C S ; Hosea, J ; Kugel, H ; LeBlanc, B P ; Meyer, H ; Park, G Y | |
关键词: ASPECT RATIO; CONFINEMENT; DEUTERIUM; HELIUM; LITHIUM; PLASMA; SPATIAL RESOLUTION H-Mode Plasma Confinement; Tokamaks; NSTX; | |
DOI : 10.2172/1028184 RP-ID : PPPL-4635 PID : OSTI ID: 1028184 Others : TRN: US1106004 |
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学科分类:原子、分子光学和等离子物理 | |
美国|英语 | |
来源: SciTech Connect | |
【 摘 要 】
Recent experiments in the low aspect ratio National Spherical Torus Experiment (NSTX) have been run in support of the high priority ITER and ITPA issue of access to the H-mode. Specifically, a series of experiments showed reduced power threshold values for deuterium vs helium plasmas, and for plasmas with lower current, lower triangularity and with lithium conditioning. Application of n=3 fields at the plasma edge resulted in higher power thresholds. To within the constraints of temporal and spatial resolutions, no systematic difference in T{sub e}, n{sub e}, p{sub e}, T{sub i}, v or their derivatives was found in discharges that transitioned into the H-mode versus those at slightly lower power that did not. Finally, H{sub 98y,2} {approx} 1 confinement quality could be achieved for powers just above the threshold power in ELM-free conditions.【 预 览 】
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RO201704210001108LZ | 639KB | download |